The filmmaker is on the cruise ship "Hermes" which has departed from Piraeus port bound for Aegina island. The lens focuses on several merchant ships and tankers in the Saronic Gulf.
We then follow the passengers on the deck, but also inside the lounges of the ship. We see distant shots of the shores of Salamis island and the seagulls following the ship.
Arriving in Aegina, the camera captures a hydrofoil ("flying dolphin") sailing by the island.